WE HAVEN"T WRITTEN TO EACH OTHER FOR TWO MONTHS.THEY COULDN...

Câu 49.

We haven"t written to each other for two months.

They couldn"t help __________ when they heard the

A. It is two months that we wrote to each other.

little boy singing a love song.

B. It is two months since we wrote together.

A. laughing B. to laugh

C. laugh

D. laughed